"But is the 6 years bonded to jetstar counted as part of "The Cadetship"? Why is there such a knock on this program? I really don't understand, it's in JQ's interests after paying for your training accomodation etc. to give you work. Unless it's in a signed contract they cannot force you to pay them back, I guess reading the fine print is important in these delicate situations"
Because, after you have finished paying for your on-the-job training (and buying your job) it is cheaper for them to "employ" another wannabe who is willing to pay for the same deal as you did. They don't renew your contract but engage a new wannabe cadet (just like you were). "Cadets" (who pay) are cheaper than employees who get paid.
Simple mathematics